The first ereader I ever used was a Sony 300. This is no big deal for me, because I prefer Kindle.

That is funny, I still have my first ereader in the closet, also a prs-300. It would be nice if Amazon made a small formfactor 5" frontlit eink Kindle. That is not going to happen once the 6" became the one size fits all.

The PRS-300 is almost as big as 6" readers now, only with a smaller display.